Passing a callback function with included parameters? [duplicate]

Answer 1

change your callback to an anonymous function:

// Set the callback function to run on success
var callback = function () {
    showGradesBox(grading_company);
};

This allows you to pass parameters to the inner function.

Edit: to allow for the ajax response:

// Set the callback function to run on success
var callback = function (response) {
    showGradesBox(grading_company, response);
};